Improvement in street-lamp regulators



A. W. PORTER. Street-Lamp Regulator.

Patented May 14, I878.

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N. PETERS. FHDTU-LITNOGRAPHER. WASHINGTON, D. C

UNITED STATES PATENT OFFICE.

ALONZO W. PORTER, OF NEW YORK, N. Y., ASSIGNOR OF ONE-FOURTH HIS RIGHT TO GEO. L. SHOREY, OF LYNN, MASS.

IMPROVEMENT IN STREET-LAMP REGULATORS.

Specification forming part of Letters Patent No. 203,769, dated May 14, 1878; application filed April 20, 1878.

To all whom it may concern:

Be it known that I, ALONZO W. ,PoRTER, of New York, in the coimty of New York and State of New York, have invented a new and valuable Improvement in Street-Lamp Regulators; and ,I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same,

' reference being had to the annexed drawing,

making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawing is a representation of a central vertical section of my street-lamp regulator, and Fig. 2 is a detail view thereof.

Fig. 3 is a central vertical sectional view of a modification, and Fig. 4 is a detail view thereof.

This invention relates todetails in the construction of that class of governors used mostly in combination with single burners in lighting streets, the purpose of such burners being to prevent undue consumption of gas, which would occur under changes of head or pressure,

above that needed to properly supply the burners.

My invention consists, first, in the peculiar" construction, as shown and described, by which the burner is united with the metallic diaphragm or float, rising and falling with the same by the pressure of the streetgas; secondly, in the peculiar construction and arrangement by which the passage or orifice which conveys the gas from under the float leads directly to the burner-tube without passing into any chamber or compartment as it escapes from under the float to the burner, and making the burner-tube serve the double purpose as a passage for the gas from the float cast-iron cup, A, with a lower screw-threaded extension, B, to receive or fit a gas-pipe. At the lower end of this extension is a small passage or aperture, 0, forming a triple function, to wit: first, for the passage of the gas to the cup; second, a guide for the valvestem at; and, third, a seat, I), for the hemispherical valve 0.

Between the outer and inner surfaces of the cup is an annular space or channel, D, to admit the flange of the float E and the mercury and glycerine seals. In the center of the float or diaphragm is a small orifice, 01, through which the valve-stem a is passed, and said valve-stem is held in place by a short curvature orbend of the stem. (See Fig.1.) Around this orifice d are a series of suitable perforations, 6, for the free passage of gas to the burner-tube. On top of the float, and surroundingthese orifices,is a small cup or socket, F, from which the burner-tube rises to the burner-tip.

The burner-tube F is screwed or slipped into the socket. In this burner tube or cup F may be placed shot or other small weights, to give a proper counterpoise to the pressure of the gas.

The upper part of the governor G is made as an inverted cup, with a conical upward extension, H, forming a collar or sleeve around the burner-tube, furnishing a guide for the burner-tube, and causing thetube and float to rise and fall vertically.

The upper part of the case rests upon the lower part of the case, and affords a shield to the float and seals, also serving as a guide for the burner-tube.

The operation of the governor above described is similar to that of others of this class, with this exception, that, instead of the gas passing into a chamber above and thence to the burner, or diverging into a passage from,

enabling me to secure acompact, symmetrical, and cheap device.

To prevent the mercury from insensible evaporation and waste, a little glycerine is used or placed on top of the mercury seal.

Fig. 3 of the accompanying drawing is a modification of my invention without the cap or upper part of the case.

What I claim as new, and desire to secure by Letters Patent, is

1. The combination, with a float having 0 its upper surface a cup or socket surrounding a series of perforations in the float, of the burner-tube F and valve 0, arranged substantially as described, and for the purpose set forth.

2. In a gas-burner governor, the burnertube F, having the float E attached to its lower end, said float being provided with a central perforation for the passage of the rod a, bent at its upper end, and provided with the valve 0 at its lower end, substantially as described, and for the purpose set forth.

3. The cup A, provided with a circular receptacle near its circumference for mercury,

and a central recess having a central gas-passage, in combination with the burner-tube F, float E, bent valve-rod a, with valve 0, and the inverted cup A, substantially as described, and for the purpose set forth.

4. In a gas-burner governor, a float having on its upper surface a cup or socket surrounding a series of perforations in the float, in combination with the burner, substantially as and for the purpose set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

ALONZO W. PORTER.

VVi tnesses:

J. FRED. AGKER, Jr., Jos. B. LOOMIS. 

